Function clock_getres [src]

Prototype

pub fn clock_getres(clock_id: clockid_t, res: *timespec) ClockGetTimeError!void

Parameters

clock_id: clockid_tres: *timespec

Possible Errors

The Operating System returned an undocumented error code.

This error is in theory not possible, but it would be better to handle this error than to invoke undefined behavior.

When this error code is observed, it usually means the Zig Standard Library needs a small patch to add the error code to the error set for the respective function.

UnsupportedClock

Source

  pub fn clock_getres(clock_id: clockid_t, res: *timespec) ClockGetTimeError!void {
    if (native_os == .wasi and !builtin.link_libc) {
        var ts: timestamp_t = undefined;
        switch (system.clock_res_get(@bitCast(clock_id), &ts)) {
            .SUCCESS => res.* = .{
                .sec = @intCast(ts / std.time.ns_per_s),
                .nsec = @intCast(ts % std.time.ns_per_s),
            },
            .INVAL => return error.UnsupportedClock,
            else => |err| return unexpectedErrno(err),
        }
        return;
    }

    switch (errno(system.clock_getres(clock_id, res))) {
        .SUCCESS => return,
        .FAULT => unreachable,
        .INVAL => return error.UnsupportedClock,
        else => |err| return unexpectedErrno(err),
    }
}  